Results 131 to 140 of about 15,745 (298)

Recovering Pulsar Periodicity from Time-of-arrival Data by Finding the Shortest Vector in a Lattice

open access: yesThe Astrophysical Journal
The strict periodicity of pulsars is one of the primary ways through which their nature and environment can be studied, and it has also enabled precision tests of general relativity and studies of nanohertz gravitational waves using pulsar timing arrays (
Dotan Gazith   +2 more
doaj   +1 more source

Uncovering hidden bias in neutron diffraction residual strain measurements

open access: yesJournal of Applied Crystallography, EarlyView.
This work demonstrates that diffraction‐based residual strain calculations and uncertainty estimates depend on how grain populations are sub‐sampled, with important implications for interpreting residual stresses in heterogeneous materials with fine‐scale microstructure and strain gradients.When calculating residual strain via neutron or X‐ray ...
Cole Franz   +4 more
wiley   +1 more source

Lux: A Generative, Multioutput, Latent-variable Model for Astronomical Data with Noisy Labels

open access: yesThe Astronomical Journal
The large volume of spectroscopic data available now and from near-future surveys will enable high-dimensional measurements of stellar parameters and properties. Current methods for determining stellar labels from spectra use physics-driven models, which
Danny Horta   +4 more
doaj   +1 more source

Fast microdosimetry algorithms in particle therapy: Benchmark and applicability guidelines

open access: yes
Precision Radiation Oncology, EarlyView.
Giorgio Cartechini   +2 more
wiley   +1 more source

China's Strategic Approach to Tech Diplomacy in a Time of Global Uncertainty

open access: yesGlobal Policy, EarlyView.
ABSTRACT In the wake of U.S.‐China technological competition and the COVID‐19 pandemic, “tech diplomacy” has gained prominence in Chinese political and academic discourse. This concept is often ideologically framed to critique Western hegemonic narratives perceived as hindering China's technological advancement.
Zhao Alexandre Huang, Xiang Meng
wiley   +1 more source

The formation of molecular hydrogen in the interstellar medium

open access: yes, 2010
H2 is the most abundant molecule in the interstellar medium and forms on the surface of interstellar dust grains. Laboratory studies have been conducted of HD formation on a dust grain analogue, which is a highly-oriented pyrolytic graphite surface ...
Islam, F.
core  

The Virtual Solar System Project: Developing Conceptual Understanding of Astronomical Concepts Through Building Three-Dimensional Computational Models

open access: yes, 2002
The Virtual Solar System (VSS) course described in this paper is one of the first attempts to integrate three-dimensional (3D) computer modeling as a central component of an introductory undergraduate astronomy course.
Hay, Kenneth E.   +3 more
core   +1 more source

The Role of Dice in the Emergence of the Probability Calculus

open access: yesInternational Statistical Review, EarlyView.
Summary The early development of the probability calculus was clearly influenced by the roll of dice. However, while dice have been cast since time immemorial, documented calculations on the frequency of various dice throws date back only to the mid‐13th century.
David R. Bellhouse, Christian Genest
wiley   +1 more source

Smart astronomy: using computational science to understand distant radio galaxies

open access: yes
Smart astronomy: using computational science to understand distant radio galaxies. Radio galaxies are among the largest galaxies in the universe with their copious radio emission powered by massive black holes.

core  

3SD: Rotational symmetry single‐shot denoising in fluorescence microscopy

open access: yesJournal of Microscopy, EarlyView.
Abstract Image noise is a fundamental problem in fluorescence microscopy analysis, especially in live cell imaging applications where the number of detected photons is limited due to low power of excitation lasers to prevent phototoxicity during extended imaging experiments.
Tijmen H. de Wolf   +4 more
wiley   +1 more source

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